Results 211 to 220 of about 13,445 (265)

FLEXIBLE AC TRANSMISSION SYSTEMS (FACTS)

Electric Machines & Power Systems, 1997
ABSTRACT The paper reviews literature which addresses the application of Flexible AC Transmission System (FACTS) concepts to the improvement of Power System utilisation and performance. It summarises literature on using high speed thyristor based control of HVAC power system elements to enhance the power carrying capacity of existing transmission ...
T. J. HAMMONS, S. K. LIM
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Simple topologies for AC-link flexible AC transmission systems

2009 IEEE Bucharest PowerTech, 2009
Vector Switching Converter VeSC has been recently introduced as an alternative for controlling power flow in power system's complex interconnections by direct AC-AC conversion, and novel FACTS devices have been recently introduced based on the VeSC, such as the Xi (Ξ) and Gamma (Γ) controllers.
Julio C. Rosas-Caro, Juan M. Ramirez, Fang Z. Peng   +2 more
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Flexible AC Transmission System (FACTS)

1996
Transmission and distribution systems are at the beginning an era of significant change — an era that is technology-driven by microelectronics (computers and microprocessors), communications, and power electronics. The combined impact of these technologies makes the era unique and important for both transmission and distribution systems, by making them
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Flexible AC transmission systems simulation and control

3D Africon Conference. Africon '92 Proceedings (Cat. No.92CH3215), 2003
Concepts relating to flexible AC transmission systems (FACTS) are gaining popularity for enhancing the power transfer limits as well as the stability characteristics of power systems. The authors present an overview of FACTS devices and associated nonlinear, modern control strategies.
R. Spee, W. Zhu
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Flexible AC Transmission System Controllers: An Evaluation

Materials Science Forum, 2010
Electricity market activities and a growing demand for electricity have led to heavily stressed power systems. This requires operation of the networks closer to their stability limits. Cost effective solutions are preferred over network extensions. The flexible alternating current transmission system (FACTS), a new technology based on power electronics,
Pavlos S. Georgilakis, Peter G. Vernados
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DC and Flexible AC Transmission Systems

2014
Under certain circumstances, it is advantageous to transmit power over a DC transmission line instead of an AC transmission line. DC transmission requires conversion from AC to DC at one end of the transmission line and conversion from DC to AC at the other end of the transmission line.
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Control of flexible AC transmission system by evolutionary fuzzy controller

2004 IEEE International Conference on Systems, Man and Cybernetics (IEEE Cat. No.04CH37583), 2005
A fuzzy controller designed by the hybrid of genetic algorithm and particle swarm optimization (F-HGAPSO) is employed for thyristor controlled series capacitor to improve the transient stability of flexible AC transmission system. The fuzzy controller outputs an approximate series capacitance to flexible AC transmission system according to both the ...
Chun-Feng Lu, Chia-Feng Juang
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Hierarchical intelligent control with flexible AC transmission systems application

Control Engineering Practice, 1993
Abstract A novel hierarchical intelligent controller configuration is proposed using an artificial neural network as a control-mode classifier in the supervisory level and a set of pre-designed controllers in the lower level. Controller outputs are modified nonlinearly by the classifying signals in a structure resembling one artificial neuron with ...
R.R. Zakrzewski, R.R. Mohler, W.J. Kolodziej   +2 more
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Vacuum Circuit Breakers in Flexible AC Transmission Systems

IEEE Transactions on Power Delivery, 2012
This paper shows two applications for using vacuum circuit breakers (VCBs) in flexible ac transmission systems in the high-voltage (HV) power grid. This is first a mechanically switched reactor, which is series connected to a thyristor-controlled series compensator in order to enhance the inductive working range.
Wenzel, T., Leibfried, T.
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Flexible AC Transmission Systems (FACTS)

2016
Flexible AC Transmission Systems (FACTS): Newton Power-Flow Modeling of Voltage-Sourced Converter-Based Controllers introduces different voltage-sourced converter (VSC)-based FACTS controllers and VSC-based high-voltage direct current (VSC-HVDC) systems and their working principles, explaining how FACTS controllers exchange real and reactive power with
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